<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
<!-- React核心包 最先引入提供一个对象React -->
<script src="../react18/react.development.js"></script>
<!-- React操作DOM的包 提供一个对象 React -->
<script src="../react18/react-dom.development.js"></script>
</head>
<body>
    <!-- Reactr操作的容器 -->
    <div id="app"></div>

    <script>
        // 创建一个虚拟DOM
        const vDom=React.createElement("h1",{},"hello React");

        // 把虚拟DOM交给React 渲染到容器中
        const root=ReactDOm.createRoot(document.getElementById("app"));
        root.render(vDom)
    </script>
</body>
</html>